IZ50738: SOAP REQUESTS WITH PREDICATES CAUSE TEMS TO BECOME NON-RESPONSIV

APAR status

• Closed as program error.

Error description

• Environment:
  6.2 FP2, single box installation on AIX.
    TEMS configured with TEC forwarding feature enabled.
  
  Problem Description:
    The kdsmain goes into high CPU usage as soon as a CT_Alert
    request is sent with specified predicates.
  
  Detailed Recreation Procedure:
    Using the SOAP interface to send the following request will
    cause kdsmain to go into high CPU state and being
    unresponsiveness.
    --------------------------------------------------------------
    <CT_Alert><userid>sysadmin</userid><password></password><name>
    sitname</name><source>nc114079:KUX</source><data><Universal_Me
    ssages.Message_Text>Testing</Universal_Messages.Message_Text><
    /data></CT_Alert>
    --------------------------------------------------------------
  
  Related Files and Output:
    TEMS traces with KFAOT component enable will show that kdsmain
    is looping around:
    (499C1451.440A-1E:kfaotfsq.c,152,"Format_SituationQualifiedDes
    cription") *INFO: ----- Examining predicate string
    (499C1451.440B-1E:kfaotfsq.c,153,"Format_SituationQualifiedDes
    cription") <0x340FF6FE,0x3>
    +499C1451.440B     00000000   313129 11)
  

Local fix

Problem summary

• Soap requests a with predicates may cause the TEMS to become
  non-responsive.
  
  If an event is sent through the SOAP interface directly to the
  TEMS, the event parsing code goes into an infinite loop and
  causes the TEMS to have a CPU spike and become non-responsive.
  This was especially true for events that had predicates in them.
  

Problem conclusion

• The code was modified so that predicates with SYSTEM.xxx(atr op
  value); would be processed correctly.  An additional change was
  made so that a predicate value gets evaluated correctly whether
  it has a space after the value or not.
  
  
  The fix for this APAR is contained in the following maintenance
  packages:
  
     | fix pack | 6.2.0-TIV-ITM-FP0003
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IZ44104

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  TEMS

• Fixed component ID

  5724C04MS

Applicable component levels

• R620 PSY

     UP